a rough estimate of

USAGE SUMMARY

"a rough estimate of" is correct and usable in written English.
You can use it when you are providing a rough guess or estimation for something that you're unsure of. For example, "I would say that a rough estimate of how long it will take is about two weeks."

✓ Grammatically correct

News & Media

Science

Academia

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

3) A rough estimate of when you would like to present.

Columbia University

The pileup_map tool computes a rough estimate of the amount of pileup.

Harvard University

Two months ago, the Congressional Budget Office gave a rough estimate of $25 billion.

The New York Times

Only a rough estimate of the number of his pupils is possible.

Britannica

Ms. Suggs offered a rough estimate of 2099 Fifth's worth today as well over $1 million.

The New York Times

There is a rough estimate of 20 million feral cats in Australia.

The Guardian

Subsequent studies produced a rough estimate of six hundred animals remaining in the wild.

The New Yorker

Each province is allocated seats in Parliament based on a rough estimate of its population.

The New York Times

Neutralization peroxidase linked antibody assays were carried out to allow a rough estimate of protection.

Veterinary Microbiology

Once these questions are answered, we can get a rough estimate of Google's ad revenue from any user.

Massachusetts Institute of Technology

However, the figure gives a rough estimate of how this probability changes over the course of a lifetime.

Stanford University

Expert writing Tips

Best practice

When using "a rough estimate of", acknowledge the potential for inaccuracy. Qualify the estimate by stating the factors that might influence its correctness. For instance, "A rough estimate of the project's cost, based on current market prices, is..."

Common error

Avoid presenting "a rough estimate of" as a definitive figure. The phrase inherently implies a degree of uncertainty, so using language that suggests absolute precision would be contradictory and misleading. Instead of saying "The rough estimate is exactly X", consider saying "The rough estimate is around X" or "The rough estimate is approximately X".

Linguistic Context

The phrase "a rough estimate of" functions as a noun phrase that introduces an approximation or inexact calculation. As Ludwig AI confirms, it's correct to use when providing a preliminary or imprecise figure.

Expression frequency: Very common

Frequent in

News & Media

30%

Science

28%

Academia

17%

Less common in

Formal & Business

8%

Encyclopedias

5%

Wiki

4%

Ludwig's WRAP-UP

In summary, "a rough estimate of" is a very common and grammatically correct phrase used to introduce an approximation. Ludwig AI confirms its usability in various contexts. It is most frequently found in news, science, and academic writing. When employing this phrase, it's crucial to acknowledge the potential for inaccuracy and avoid presenting it as a definitive figure. Related phrases like "an approximate calculation of" and "a ballpark figure for" can provide similar meanings with slightly different nuances.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

a guesstimate of

Combines "guess" and "estimate", stressing the lack of precision.

an order-of-magnitude estimate of

Highlights the scale and level of imprecision in the estimate.

an approximate calculation of

Emphasizes the calculation aspect while highlighting its inexact nature.

a broad approximation of

Emphasizes the wide-ranging and simplified nature of the approximation.

a ballpark figure for

Suggests a very general and preliminary estimation, often used in financial contexts.

a first-order approximation of

Emphasizes the simplifications and assumptions made in the approximation.

a back-of-the-envelope calculation for

Highlights the informality and speed of the calculation.

a preliminary assessment of

Focuses on the early stage and potential incompleteness of the assessment.

an educated guess regarding

Implies some level of knowledge or expertise informing the estimate.

a tentative valuation of

Specifically suggests a temporary or provisional assessment of value.

FAQs

How can I use "a rough estimate of" in a sentence?

Use "a rough estimate of" when you want to provide an approximation or an inexact calculation. For example, "I can give you "a rough estimate of" the time it will take, but it could vary depending on traffic conditions."

What are some alternatives to "a rough estimate of"?

You can use alternatives like "an approximate calculation of", "a ballpark figure for", or "a guesstimate of", depending on the context.

When is it appropriate to use "a rough estimate of"?

It is appropriate to use "a rough estimate of" when you do not have precise data or when a precise calculation is not necessary or feasible. It's often used in initial planning stages or when providing preliminary information.

What does "a rough estimate of" imply about the level of accuracy?

"A rough estimate of" implies a low level of accuracy. It indicates that the number or value provided is an approximation and should not be relied upon for critical decisions without further verification.